Recent content by kathy

Question: An hand crank is used to life a bucket of water from a well. The bucket and water have a combined mass of 12.0 kg and must be raised 8.5 m. The force used to lift this load is 40.0 N and must be applied over a total circular distance of 15.0 m. What is the efficiency of the system...

Reply to Satvik Pandey Sorry but I'm not really understanding. Am I supposed to substitute velocity as 0 instead of 20m/s?

Problem: Jamilla throws a stone horizontally off a pier into the ocean at a velocity of 20 m/s. If the stone is 40.0m from the edge of the pier when it hits the water, how high above the water's surface was the stone when Jamilla threw it? Related Equations: displacement = velocity x time...

Problem Solving Sorry I didn't problem solve before but I'll make sure to the next time I post a thread. Here's my problem solving. a. How long will it take the supplies to fall to the ground? (You can ignore the effect of air resistance). d= -150m v1= 50m/s a= 9.8m/s2 d = (v) (t) + (a)...

I'm taking grade 11 physics online for the summer time. I have a problem with this question :] An airplane flying at 50.0m/s is bringing food and emergency first aid supplies to a camp. The plane is for the pilot to drop the supplies so that they land on an "X" marked on the ground 150m below...